I have had it, over it, I am going off to buy a new laptop today. This fucken mac book air crashes at least 3 times a day, and if I shut the lid and then pull the 3g modem or ethernet dongle out it locks up and wont sleep. When this happens and I put it in my backpack to ride home, it find it almost on fire when I get home. So people, here is the tip. Dont ever by a mac book air, they are pieces of shit.